My daughter had pancreatitis last summer. It truly causes horrible pain. She was in the hospital for 12 days (though she had other stuff going on - she had severe motility issues - ileus - which actually caused the pancreatitis). She was in a LOT of pain and still maintains that that hospitalization was the most painful and more difficult to get through - and she has had 10 surgeries, including having 2 total joint replacements (at the same time) due to her severe Ankylosing Spondylitis (it was an 8 hour surgery, where she spent 2 days in the ICU and 9 days on a regular floor).
We were told the treatment for pancreatitis is gut rest and pain relief. She was actually NPO for 5-6 days, then on TPN for 5-6 days and then transitioned to tube feeds. My daughter had a feeding tube prior to the pancreatitis - she has had one for years due to being severely underweight due to Crohn's.
When my daughter was diagnosed with Crohn's and for about a year after dx, she was quite underweight - she lost 15 lbs during that period and was very thin to begin with. Initially we saw a dietician and tried to increase calories with more food. That failed. Then she was told to start drinking semi-elemental shakes (polymeric shakes like Boost and Ensure, which taste like dessert compared to semi-elemental or elemental shakes, caused diarrhea for her) which taste pretty awful. She managed to get somewhat used to the taste, but just couldn't drink enough to stop losing weight, much less gain weight. So then we were sent back to the dietician and then saw her GI who essentially said she needed the formula and she could either use an NG tube or drink.
Her GI pushed the formula - NOT the method of intake - drinking vs. tube. So she learned to place the NG tube when she was 16 or so - inserted it at night and removed it in the morning, so no one at school would have to know.
Later on, she developed motility issues and was throwing up NG tube feeds. Again, her GI pushed formula - she could either drink it OR use an NJ tube. She tried drinking it and lost more and more weight until she finally agreed to the tube (she was 18 then, so it had to be her choice)
I do agree that formula should be treated like medication, but honestly, pancreatitis is SO painful that I would not force my daughter to drink formula if she could not. If she wasn't in horrific pain, I would push drinking, but knowing how much pancreatitis hurts, I would not force her to drink, if it were my child. Not if she was willing to use a tube.
That said, our hospital was very pro tube and I know all doctors are different. But my daughter (who is now in her 20s) says in that kind of pain, all her energy was focused on dealing it and she cannot imagine forcing herself to drink while dealing with that pain.
Can I ask - since she is inpatient, couldn't they do TPN? That is usually what is required first - complete gut rest (at least, that's what we were told) and then you work your way up to tube feeds or drinking the formula.